FLOUR ON FRANÇOIS: A woman, unseen, threw flour on leading Socialist Party French presidential candidate François Hollande at an event in Paris Wednesday. Mr. Hollande was about to sign a ‘social contract’ in favor of housing for all. (Associated Press)

IN SENEGAL’S STREETS: Men tried to overturn a bus in Dakar, Senegal, Wednesday. Security forces used tear gas and flash grenades to disperse hundreds of rock-throwing youths in the capital a day after a student was killed in antigovernment protests. The clashes come as President Abdoulaye Wade seeks a third term. (Joe Penney/Reuters)

DRAGON DANCE: People participated in a ‘dragon dance’ Wednesday in Xianju, Zhejiang Province, China, as part of a festival. (Xu Yu/Xinhua/Zuma Press)

SHELTER FROM THE COLD: An angler sipped a hot drink in a small tent as he took a break from ice fishing on the frozen Dnipro River outside Cherkasy, Ukraine, Wednesday. The death toll from severe cold weather in Eastern Europe rose to at least 71 Wednesday. (Efrem Lukatsky/Associated Press)

UNDERGROUND: Men worked underground on the North-South metro line in Amsterdam Wednesday. (Lex van Lieshout/European Pressphoto Agency)

READY TO DANCE: A dancer from the Congo stood in front of art that depicts a historic battle before she performed at the opening of the Surajkund Fair in Faridabad, India, Wednesday. The fair features cultural events and crafts from all of India’s states and other countries. (Kevin Frayer/Associated Press)

PRACTICE MAKES PERFECT: Dancers rehearsed at the Bolshoi Ballet Academy in Moscow Monday. Around 100 foreigners from all over the world are enrolled at the academy, which will see its first American graduate this year. (Denis Sinyakov/Reuters)

PRAWNS AT A PORT: A boy sorted prawns with his mother at a sea port on the outskirts of Karachi, Pakistan, Tuesday. (Athar Hussain/Reuters)

SAINT REMEMBERED: Muslims gathered at the shrine of St. Mian Mir to celebrate his life in Lahore, Pakistan, Tuesday. (Arif Ali/Agence France-Presse/Getty Images)

SAND FOR SALE: A man carried a bucket of sand from a river in Franceville, Gabon, Tuesday. The sand will be sold for use as building materials, according to the men. (Louafi Larbi/Reuters)

CHAOTIC SCENE: A police officer wielded a baton at Samajwadi Party activists during an election rally that was attended by party leader Mulayam Singh Yadav in Allahabad, India, Tuesday. Uttar Pradesh state, where Allahabad is located, will choose Assembly members next week. (Rajesh Kumar Singh/Associated Press)

BRIGHT SPOTS: Thousands of fish floated near the surface of the water at the Divor Dam in Arraiolos, Portugal, Tuesday. The water level is low due to a lack of rain. (Nuno Veiga/European Pressphoto Agency)

DOING THEIR DUTY: Voters waited in line to cast ballots at a polling station near the India-Pakistan border Monday. Millions of Indians are voting in Assembly elections. (Altaf Qadri/Associated Press)

HOLY HAIR: A Hindu holy man whipped his head back as he took a dip at Sangam, the confluence of the Rivers Ganges, Yamuna and mythical Saraswati, during the Magh Mela fair in Allahabad, India, Monday. (Rajesh Kumar Singh/Associated Press)

RIPPED: Serbian Novak Djokovic celebrated his Australian Open win over Spain’s Rafael Nadal in Melbourne, Australia. Mr. Djokovic won in a record five hours and 53 minutes. The win was the second straight Australian Open title for Mr. Djokovic and his third straight victory at a Grand Slam tournament. (Ryan Pierse/European Pressphoto Agency)

VERIFIED: Voter Hardans Kaur held up her identity card as she waited in line at a polling station in Amritsar, India, Monday. (Narinder Nanu/Agence France-Presse/Getty Images)

MITT THROWS: Republican presidential candidate and former Massachusetts Gov. Mitt Romney tossed chips to members of the media on his campaign plane in Jacksonville, Fla., Monday. The state’s primary is Tuesday. (Brian Snyder/Reuters)

Photographer Benjamin Drummond and writer Sara Joy Steele work as a documentary team, producing top-notch audio, video, research and still photography looking at environmental issues facing people around the world. Their ongoing, award-winning project Facing Climate Change examines how global environmental changes are affecting people in localized ways. The images in this gallery are from a recent collaboration with the Conservation International–a new global camera mammal study that seeks to provide data on species from protected areas in the Americas, Africa and Asia. A total of 420 cameras were placed around the world, with 60 motion-activated cameras set up in each site at a density of one per every two square kilometers for a month in each site.

“What makes this study scientifically groundbreaking is that we created for the first time consistent, comparable information for mammals on a global scale setting an effective baseline to monitor change. By using this single, standardized methodology in the years to come and comparing the data we receive, we will be able to see trends in mammal communities and take specific, targeted action to save them”, said Dr. Jorge Ahumada, ecologist with the Tropical Ecology Assessment and Monitoring Network at Conservation International, noting that 2010 cameras have been installed in new places, expanding the monitoring network to 17 sites (Panama, Ecuador, another site in Brazil, two sites in Peru, Madagascar, Congo, Cameroon, Malaysia and India). “Without a systematic, global approach to monitoring these animals and making sure the data gets to people making decisions, we are only recording their extinctions, not actually saving them.” To see a gallery of remarkable images made with the motion activated cameras in the study, click here.

Photos by Benjamin Drummond, August, 2011

The first global camera trap mammal study has documented 105 species in nearly 52,000 images from seven protected areas across the Americas, Africa and Asia. In the Udzungwa Mountains of Tanzania, field technicians hike cross-country to install a motion-triggered camera.

At each research site, 60 cameras are placed on a grid of one camera per two square kilometers. The photographic data helped scientists confirm that habitat loss has a direct and detrimental impact on the diversity and survival of mammal populations.

Tanzania field technicians Steven Shinyambala, Emanuel Martin, and Aggrey Uisso check the alignment of a newly set camera trap in Udzungwa National Park.

Each camera will run day and night for 30 days to photograph passing mammals and birds. The study is the first to collect comparable information on mammals at a global scale and provides a baseline to monitor change.

The forests of Tanzania’s Udzungwa Mountains provide a critical source of water to surrounding rice and sugarcane fields. The camera trap data helps scientists understand how mammals are impacted by local, regional and global threats such as overhunting, conversion of land to agriculture and climate change.

This African leopard, a threatened species, was captured by a camera trap in Tanzania’s Udzungwa Mountains. This image is one of nearly 52,000 photos taken as part of the first global camera trap mammal study.

Alma Dulce, a 2-year old Xoloitzcuintli, was photographed with owner Jose Barrera, on Jan. 26. Six breeds, including the Xoloitzcuintli, will be competing for the first time Feb. 13 and 14 at the 136th annual Westminster Kennel Club Dog Show. (Rob Bennett for The Wall Street Journal )

Alise Williams, 6, wore a firefighter’s hat, a gift from the FDNY, at a press conference for the Honor Roll of Life at the FDNY Headquarters in downtown Brooklyn on Jan. 25. Firefighter James Wildes was honored for donating bone marrow that saved Alise, who suffers from congenital heart defects. (Bryan Derballa for The Wall Street Journal)

A student practiced before going on stage at Gotham Hall on Jan 18. Plácido Domingo conducted the student musicians from P.S. 152 and P.S. 129 at the Harmony Program’s fund-raiser, the Annual Gala Waltz. (Lauren Lancaster for The Wall Street Journal)

The vegetable frittata at Vareli in Morningside Heights (Ramsay de Give for The Wall Street Journal )

Players from Team Toro, left, competed against Team Puma, at the Grand Central Station Showdown, a table tennis tournament to benefit Big Brothers Big Sisters of New York City on Jan. 26. (Bryan Derballa for The Wall Street Journal)

A cocktail made with Apple Pie Corn Liquor, bonded Apple Jack and homemade apple bitters is infused with apple-wood smoke at The Wayland in the East Village. (Agaton Strom for The Wall Street Journal)

Art dealer Warren Adelson’s five-story Upper East Side townhouse, filled with 19th- and 20-century American art, serves as both gallery and a pied-à-terre. Here, the library on the third floor. (Daniella Zalcman for The Wall Street Journal)

A duck confit ‘sloppy joe’ at Alobar in Long Island City. (Lauren Lancaster for The Wall Street Journal)

Rooster Gallery Curator Andre Escarameia, left, watche as Director Alexander Slonevsky ironed a tablecloth designed by the late Brazilian landscape architect Roberto Burle Marx. The tablecloth goes on sale this week for $26,000 (Lauren Lancaster for The Wall Street Journal)

A customer walked out of Morscher’s Pork Store, at 58-44 Catalpa Ave. in Ridgewood, Queens, on Jan. 25. (Rob Bennett for The Wall Street Journal)

Singer Rufus Wainwright, center, watched lead Melody Moore, left, during a rehearsal of his opera ‘Prima Donna’ in a practice space at the Snapple Theater Center in Manhattan on Jan. 24. Mr. Wainwright wrote the opera, which is being produced by the NYC Opera and will premier at BAM next month. (Bryan Derballa for The Wall Street Journal)

Locals shot fireworks to celebrate the Lunar New Year on Jan. 23 at Roosevelt Park in Manhattan. (PJ Smith for The Wall Street Journal )

SET POINT: Andy Murray of Britain celebrated winning the third set during his semifinal match against Novak Djokovic of Serbia at the Australian Open tennis tournament in Melbourne on Friday. Mr. Djokovic went on to win the match. (Greg Wood/AFP/Getty Images)

BAD MEDICINE: Lubna mourned over the body of her uncle Chaudhry Mohammad Gulab, a heart patient who died in Lahore, Pakistan, on Friday. The government in Pakistan’s Punjab province is scrambling to recall contaminated drugs that have killed more than 100 people in the last month. (Mani Rana/Reuters)

GUNS AND FLAGS: A Syrian soldier who defected to join the Free Syrian Army held up his rifle and waved a Syrian independence flag in the Damascus suburb of Saqba on Friday. (Ahmed Jadallah/Reuters)

SOMBER ANNIVERSARY: A white rose was placed on barbed wire at the museum of the former Nazi concentration camp of Auschwitz Birkenau on Friday, marking the 67th anniversary of the liberation of the camp by Soviet troops. (Kacper Pempel/Reuters)

DISCONNECTED: A cargo ship paused in the water on Friday after colliding with and partially collapsing a bridge near Aurora, Ky. The ship was traveling upriver toward the Kentucky Lock and Dam when it hit the steel bridge, which was built in the 1930s and handles about 2,800 vehicles a day. (Tina Carroll/Associated Press)

WHISKED AWAY: Australian Prime Minister Julia Gillard was escorted to safety amid a protest during a ceremony in Canberra to mark Australia Day Thursday. About 200 supporters of indigenous rights surrounded a restaurant and banged on its windows while Ms. Gillard was inside. (Lukas Coch/Associated Press)

ONE FACE: Lawmakers from the leftist Palikot’s Movement covered their faces with masks to protest the Anti-Counterfeiting Trade Agreement during a legislative session in Warsaw Thursday. Poland signed an international copyright agreement Thursday, sparking demonstrations. (Alik Keplicz/Associated Press)

COLD IN KIEV: A woman looked through an ice-covered window on a bus in Kiev, Ukraine, Thursday. (Sergei Chuzavkov/Associated Press)

SEPARATE PRAYERS: Jewish women prayed behind a curtain that separated them from men at the tomb of Rabbi Baba Sali during an annual pilgrimage to his grave in Netivot, Israel, Thursday. (Menahem Kahana/Agence France-Presse/Getty Images)

BUCKET HEADS: Bedouin Palestinian children played with buckets on their heads near the Jewish settlement of Maale Adumim, West Bank, Thursday. (Abir Sultan/European Pressphoto Agency)

SAVING A SHACK: Paul Cook, left, and Al Anderson, tried to rescue a shack on Lake Mendota in Westport, Wis., Wednesday. The shack, used by a men’s recreational ice hockey group, began sinking during a recent thaw and then froze in place. (M.P. King/Wisconsin State Journal/Associated Press)

WORKER WRITHES: A Palestinian construction worker screamed in pain after an Israeli soldier drove a trailer hooked to a tractor over his legs near Yatta, West Bank, Wednesday. Israeli forces seized equipment because they said the workers were building in an unauthorized area. (Hazem Bader/Agence France-Presse/Getty Images)
UPDATE: A spokesman for the Israel Defense Forces, Capt. Eytan Buchman, says that the man wasn’t run over. ‘After claiming to be injured, he was inspected by both an IDF medic and a Red Crescent medic, both who determined that he required no medical care whatsoever,’ Capt. Buchman said. AFP, the agency that took the photo, said it has reviewed the pictures and videos of the event and has ‘no intention at this stage to correct our caption or withdraw any part of it.’

A BIG SAND TRAP: England’s Luke Donald played in Liwa Desert during a promotional event in Abu Dhabi, United Arab Emirates, Tuesday, two days before the start of the Abu Dhabi HSBC Golf Championship. (Andrew Redington/Abu Dhabi HSBC Golf Championship /European Pressphoto Agency)

CARRYING ON: Protesters carried an obelisk, bearing the names of Egyptians killed during an uprising that toppled Hosni Mubarak in 2011, as they marked the one-year anniversary of the uprising with a rally in Cairo’s Tahrir Square Wednesday. (Mahmud Hams/Agence France-Presse/Getty Images)

CAMPAIGN EVENT: Carmen Hilburn and Alejandro Jimenz listened to Republican presidential candidate and former Speaker of the House Newt Gingrich speak during a Latin American policy event at Florida International University in Miami Wednesday. (Shannon Stapleton/Reuters)

Ecuador-based photojournalists Ivan Kashinsky and Karla Gachet visited The Wall Street Journal last week to show their work–including a new app they developed for the iPad called “Short Stories: From Ecuador to Tierra Del Fuego”—the result of visiting five South American countries in seven months in their trusty jeep, Sancho, named for Don Quixote’s Sancho Panza.

Mr. Kashinsky and Ms. Gachet met at the newspaper at San Jose State University in California, eventually married and headed for the equator. Ms. Gachet became the first woman photographer at El Comercio, a major newspaper in Ecuador, and both have received multiple awards for their work. To see more images, visit their new website, Runa Photos.

Herding vicunas in the Peruvian Andes, near the pueblo of Cotobambas, on July 25, 2009

Boys jump into the ocean in the isolated fishing pueblo of Limones in the province of Esmeraldas, on August 17, 2008. Limones can only be reached by boat and lies on the border of Ecuador and Colombia.

A bullfighter performs during the Yawar Fiesta in the Peruvian Andes in Coyllurqui, on July 29, 2009. Every year, during Peru’s Independence Day, the Blood Fest is celebrated in the highland communities of Apurimac.

Miners chew coca leaves, which give them energy to work, deep in the mines of Oruro, Bolivia, February 2009.

SWEATING BEADS: Beads of perspiration dropped from the face of Spain’s Rafael Nadal during a match against the Czech Republic’s Tomas Berdych at the Australian Open tennis tournament in Melbourne, Australia, Tuesday. Mr. Nadal won. (Darren Whiteside/Reuters)

MOVING HOUSE: Workers lifted a Habitat house over a fence from a South Carolina Department of Juvenile Justice facility in Columbia, S.C., Monday. Youths at the facility worked with volunteers to build the home for a woman whose son suffers from cerebral palsy. (Gerry Melendez/the State/Associated Press)

A MOCKERY OF JUSTICE: A demonstrator motioned to a doll bearing the likeness of former dictator Gen. Francisco Franco as he held up a banner of Spanish judge Baltasar Garzon at Madrid’s Supreme Court Tuesday. The judge is being tried for probing alleged atrocities around Spain’s 1936-39 civil war, which brought Mr. Franco to power. (Susana Vera/Reuters)

TEARFUL TESTIMONY: Audrey Mabrey wiped tears away as she testified Tuesday in Tampa., Fla., against her husband, Christopher Hanney, who allegedly set her on fire. (Kathleen Flynn/Tampa Bay Times/Zuma Press)

FATHER AND SON: A boy rested next to his father at a hospital after they were wounded in a car bombing in the Sadr City area of Baghdad Tuesday. A series of car bombs exploded in Shiite areas, killing at least nine people and injuring dozens, an interior ministry official said. (Ahmad al-Rubaye/Agence France-Presse/Getty Images)

TANGLED UP: Iceland’s Robert Gunnarsson lay on the ground during a game against Spain at the European Handball Championship in Novi Sad, Serbia, Tuesday. (Laszlo Balogh/Reuters)